feat(help): update step 2 with subject area

src/locales/en-au.json

@@ -47,7 +47,7 @@
 		"title": "How to use MyTimetable",
 		"steps": {
 			"select-term": "Select a term.",
-			"search-course": "Search for a course and press “Add” to add the course to the timetable.",
+			"search-course": "Choose a subject area, search for a course, and click “Add” to include it in your timetable.",
 			"calendar-dnd": "Scroll down to see the calendar with your enrolled courses. You can drag a class and drop it in one of the highlighted boxes to change its time.",
 			"change-week": "Change the calendar week to see more classes.",
 			"course-details": "Click your enrolled course to see details of your enrolled classes.",

src/locales/zh-cn.json

@@ -47,7 +47,7 @@
 		"title": "如何使用 MyTimetable",
 		"steps": {
 			"select-term": "选择你的学期",
-			"search-course": "搜索课程后点击“添加”将课程添加至课程表",
+			"search-course": "选择一个学科并搜索课程，点击“添加”将课程添加至课程表",
 			"calendar-dnd": "下滑查看课程表，可以通过托拽课程修改时间",
 			"change-week": "切换周数查看更多课程",
 			"course-details": "点击你的选课查看详情",

src/mocks/handlers.ts

@@ -90,7 +90,8 @@ export const handlers = [
 	http.get('/api/subjects', async () => {
 		return HttpResponse.json({
 			subjects: deduplicateArray(COURSES.map(({ name }) => name.subject)).map(
-				(code, i) => ({ code, name: `Subject ${i}` }),
+				// (code, i) => ({ code, name: `Subject ${i}` }),
+				(code, i) => ({ code, name: `Computer Science` }),
 			),
 		});
 	}),